Multi-sensor monitoring information based decision support method for optimal predictive maintenance policy

This study presents a decision-support method to estimate the next year performance of corporate Operating Income Margin (OIM). It is based on a unique combination of cross-section model and the rules-based evaluation mechanism. The estimate is done in terms of broad categories, and not precise numerical values. The model is constructed as follows: its dependent variable (OIM) is one year ahead vs. the corresponding explanatory variables. This structure of the model allows us to view explanatory variables as reflecting financial potential of corporations. The evaluation component consists of a set of rules designed to identify the companies whose “potential” clearly points to an opportunity to invest. For the method presented here to succeed, it is necessary to utilize a highly reliable modeling method, even if it is “Fuzzy”. We apply Soft Regression (SR), which is a Soft Computing modeling tool based on Fuzzy Logic, and utilize all available proxy variables by creating intervals of values. Advantages of utilizing SR, and the intervals’-based modeling are extensively discussed. Modeling results for five consecutive years are consistent and stable, thus indicating high degree of reliability. Testing indicates very high success rate for the stock market related domain, the lowest being 87.9%.

Download Full-text

Optimal Predictive Maintenance Policy for an Ocean Wave Farm

IEEE Transactions on Sustainable Energy ◽

10.1109/tste.2018.2877437 ◽

2019 ◽

Vol 10 (4) ◽

pp. 1993-2004

Author(s):

Parth Pradhan ◽

Shalinee Kishore ◽

Boris Defourny

Keyword(s):

Predictive Maintenance ◽

Ocean Wave ◽

Maintenance Policy ◽

Wave Farm

Download Full-text

A decision support method for evaluating database designs

Computer Science and Information Systems ◽

10.2298/csis100929039e ◽

2012 ◽

Vol 9 (1) ◽

pp. 81-106 ◽

Cited By ~ 1

Author(s):

Erki Eessaar ◽

Marek Soobik

Keyword(s):

Decision Support ◽

Data Model ◽

Processing System ◽

Transaction Processing ◽

Database Management System ◽

Pairwise Comparisons ◽

Analytic Hierarchy ◽

Hierarchy Process ◽

Decision Support Method

It is possible to produce different database designs based on the same set of requirements to a database. In this paper, we present a decision support method for comparing different database designs and for selecting one of them as the best design. Each data model is an abstract language that can be used to create many different databases. The proposed method is flexible in the sense that it can be used in case of different data models, criteria, and designs. The method is based on the Analytic Hierarchy Process and uses pairwise comparisons. We also present a case study about comparing four designs of SQL databases in case of PostgreSQL? database management system. The results depend on the context where the designs will be used. Hence, we evaluate the designs in case of two different contexts - management of measurements data and an online transaction processing system.

Download Full-text